The paper analyzes the implications of local and global pollution when two types of abatement activities can be undertaken. One type (e.g., use of particulate matter filters) reduces solely local pollution while the other (e.g., application of fuel saving technologies) mitigates global pollution...

The paper analyzes resource policies in an economy in which renewable and fossil resources are realistically assumed to be essential inputs to production. Also realistically, the two types of resources are imperfect substitutes whose degree of substitutability can, however, increase over time....